Window Close

What I Have:

I have an interactive type application called "Toolbook". Toolbook is launched from an index.html page that has severl links. One of the links opens another interactive type application called "SoftSim". When the link is clicked, it opens the SoftSim index.htm page that opens a javascript playback function - this is part of the code: javascript:openPlayback('SoftSim?param=AutoPlayback','1'). When the playback simulation window is closed, the SoftSim index.htm page is still open.

What I Need:

After the playback simulation is closed, I would like to have the SoftSim index.htm page close also or have the SoftSim index.htm page close after the playback simulation launches (either one will work).

Thanks...